constructive and deconstructive waves

waves are caused by

• the wind dragging on the surface of the water

• the wind dragging underneath the surface of the water

define fetch

• the length of water the wind blows over

• the length the wind travels

• the speed the wind travels

• the speed the wave travels

the size of a wave depends on:

• length of time the wind has been blowing

• strength of the wind

• fetch

• speed of the wind pushing the wave

define wave length

• distance between wave crests

• distance between wave troughs

• wave period

• backwash

define wave crest

• highest surface part of a wave

• lowest surface part of a wave

• distance between wave troughs

• swash and backwash

define wave trough

• lowest surface part of a wave

• highest surface part of a wave

• fetch

• speed of wave

define swash

• when a wave breaks water is washed up the beach

• when a wave runs back down the beach

define backwash

• when water runs back down the beach

• when a wave breaks and water is washed up the beach

with a constructive wave, is the swash weaker than the backwash?

• swash is stronger than backwash

• backwash is stronger than swash

with a destructive wave, is the backwash stronger than the swash?

• backwash is stronger than swash

• swash is stronger than backwash